I've been on Synthroid since 1997. Unfortunately, my TSH levels won't stay stabilized, so I have to be tested every 6 weeks and get a dosage change. I have prescription bottle in everything from 200 mcg to 88 mcg! I used to think it was the root cause of my weight issues, but I don't think that anymore. I also took Armour Thyroid for a couple of months a few years ago - I was convinced I would lose weight on it. Had to take it twice a day as it has a short shelf-life. My TSH jumped all over and I didn't lose weight, so I went back to Synthroid.
But I really don't have any bad stories. I'm sure it's not the meds fault that my levels go up and down all the time.
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"I never made "Who's Who"- but sure as hell I made "What's That??..."